Dob·son n. Zool. The aquatic larva of a large neuropterous insect (Corydalus cornutus), used as bait in angling. See Hellgamite.
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Hell·ga·mite Hell·gra·mite n. Zool. The aquatic larva of a large American winged insect (Corydalus cornutus), much used a fish bait by anglers; the dobson. It belongs to the Neuroptera.
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Corydalus cornutus
n : large soft-bodied insect having long slender mandibles in
the male; aquatic larvae often used as bait [syn: dobson,
dobsonfly, dobson fly]